
The CUB-200-2011 dataset [1]} comprises 11,788 images of 200 bird species. We use the first 100 species (5864 images) for training and the remaining 100 (5924 images) for testing.


The Cars196 dataset [2]} consists of 16,185 images of 196 classes of cars. We use the first 98 car classes (8054 images) as the training data and the remaining 98 classes (8131 images) as testing data.


The Stanford Online Products (SOP) dataset [3]} contains 120,053 images of 22,634 online products listed on eBay.com. The train set consists of 59,551 images of first 11,318 product classes, while the test set uses the remaining 60,502 images of 11,316 classes.

